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Hella Gutmann mega macs S 20 Manuel De L'utilisateur page 85

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Hella Gutmann
• Perform any assembly work such as the connection of the diagnostic device to the vehicle or the replacement of com-
ponents only when ignition is switched off.
3.5. Safety Precautions for Hybrid/Electric Vehicles
Very high tensions occur on hybrid and electric vehicles. Due to voltage flashover on damaged components, such as
marten damage or touching live components, the risk of electric shock is likely. High voltage at or in the vehicle can lead
to death in case of inattention. Therefore regard the following:
• Only the following qualified employees are allowed to de-energize the high-voltage system:
– High-voltage technician
– Skilled electrician for predetermined operations – Hybrid or rather electric vehicles
– Skilled electrician
• Place and attach warning signs and barriers.
• Check the high-voltage system and the high-voltage lines for damage (visual inspection!).
• De-energizing the high-voltage system:
– Switch off ignition.
– Disconnect the service disconnect plug.
– Remove the fuse.
– Disconnect the ground side of the 12-V vehicle electrical system.
• Regard the vehicle manufacturer's instructions.
• Securing the high-voltage system against re-activation:
– Withdraw the ignition key and keep it safe.
– Keep the service disconnect plug in a safe place or secure the battery master switch against re-activation.
– Insulate the battery master switch, the plug connections etc. with dummy plugs, covering caps or insulating tape
with the corresponding warning notice.
• Use a voltage tester to make sure that the vehicle is de-energized. Even if the high-voltage system is deactivated,
some residual voltage may still be present.
• Ground and short-circuit the high-voltage system (necessary only if voltage is higher than 1000 V).
mega macs S 20
Safety Precautions | 3.
85

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